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authorSoeren Sandmann <sandmann@daimi.au.dk>2009-10-28 18:55:36 +0100
committerIngo Molnar <mingo@elte.hu>2009-11-10 04:15:32 +0100
commit5ebd4c22897dce65845807a9bd3a31cc4e142b53 (patch)
treed56865116e9961450c48c46ae3d346956f66b180 /firmware
parentrcu: Fix long-grace-period race between forcing and initialization (diff)
downloadlinux-5ebd4c22897dce65845807a9bd3a31cc4e142b53.tar.xz
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highmem: Fix race in debug_kmap_atomic() which could cause warn_count to underflow
debug_kmap_atomic() tries to prevent ever printing more than 10 warnings, but it does so by testing whether an unsigned integer is equal to 0. However, if the warning is caused by a nested IRQ, then this counter may underflow and the stream of warnings will never end. Fix that by using a signed integer instead. Signed-off-by: Soeren Sandmann Pedersen <sandmann@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: a.p.zijlstra@chello.nl Cc: <stable@kernel.org> # .31.x LKML-Reference: <ye8zl7b8ktj.fsf@camel23.daimi.au.dk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions